package com.springboot.mall.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.springboot.mall.common.Result;
import com.springboot.mall.entity.Employee;
import com.springboot.mall.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * 1、将页面提交的密码password进行md5加密处理
     * 2、根据页面提交的用户名username查询数据库
     * 3、如果没有查询到则返回登录失败结果
     * 4、密码比对，如果不一致则返回登录失败结果
     * 5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
     * 6、登录成功，将员工id存入Session并返回登录成功结果
     */
    @PostMapping("/login")
    public Result<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        Result<Employee> result = employeeService.login(employee);
        if (result.getCode() == 1){
            request.getSession().setAttribute("loginUser",result.getData().getId());
        }
        return result;
    }

    /**
     * 员工退出登录
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public Result<String> logout(HttpServletRequest request){
        //清除Session中保存的当前登录用户的id
        request.getSession().removeAttribute("loginUser");
        return Result.success("退出成功！！！");
    }

    /**
     * 新增员工
     * @param request
     * @param employee
     * @return
     */
    @PostMapping
    public Result<String> add(HttpServletRequest request,@RequestBody Employee employee){
//        log.info("新增员工信息：{}",employee.toString());
        //初始密码为123456  使用md5加密技术
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //获取系统当前用户
        //Long empId = (Long) request.getSession().getAttribute("loginUser");
        //employee.setCreateUser(empId);
        //employee.setUpdateUser(empId);

        //添加数据
        employeeService.save(employee);
        return Result.success("添加成功");
    }

    /**
     * 员工分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public Result<Page> page(int page,int pageSize,String name){
        //log.info("page = {},pageSize = {},name = {}",page,pageSize,name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo,queryWrapper);
        return Result.success(pageInfo);
    }

    /**
     *员工信息修改
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public Result<String> update(HttpServletRequest request,@RequestBody Employee employee){
        Long empId = (Long) request.getSession().getAttribute("loginUser");
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);
        employeeService.updateById(employee);
        return Result.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public Result<Employee> getById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        log.info("员工信息：{}",employee);
        if(employee != null){
            return Result.success(employee);
        }
        return Result.error("没有查询到对应的员工信息");

    }

}
